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config: support backslash-newline line continuation (#611) #625

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config: support backslash-newline line continuation (#611) #625

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18 changes: 18 additions & 0 deletions common/lib/config.c
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Original file line number Diff line number Diff line change
Expand Up @@ -410,6 +410,24 @@ int init_config(size_t config_size) {
// add trailing newline if not present
config_addr[config_size - 2] = '\n';

// handle backslash-newline line continuation
size_t write = 0;
for (size_t read = 0; read < config_size; read++) {
if (config_addr[read] == '\\' && read + 1 < config_size) {
if (config_addr[read + 1] == '\n') {
read++;
continue;
}
if (config_addr[read + 1] == '\r' && read + 2 < config_size && config_addr[read + 2] == '\n') {
read += 2;
continue;
}
}
config_addr[write++] = config_addr[read];
}

config_size = write;

size_t config_alloc_size = config_size;

// remove windows carriage returns and spaces at the start and end of lines, if any
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